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From "Devaraj K (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (MAPREDUCE-4047) NullPointerException during the map task merge phase
Date Wed, 30 May 2012 11:06:23 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4047?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Devaraj K reassigned MAPREDUCE-4047:
------------------------------------

    Assignee:     (was: Devaraj K)
    
> NullPointerException during the map task merge phase
> ----------------------------------------------------
>
>                 Key: MAPREDUCE-4047
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4047
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.1
>            Reporter: Devaraj K
>
> While executing the tera sort with 1TB data, got the below exception
> {code:xml}
> 2012-03-20 21:02:18,526 FATAL [IPC Server handler 14 on 31776] org.apache.hadoop.mapred.TaskAttemptListenerImpl:
Task: attempt_1332261815858_0002_m_003124_0 - exited : java.lang.NullPointerException
>         at org.apache.hadoop.mapred.IFile$Writer.<init>(IFile.java:135)
>         at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.mergeParts(MapTask.java:1845)
>         at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.flush(MapTask.java:1438)
>         at org.apache.hadoop.mapred.MapTask$NewOutputCollector.close(MapTask.java:663)
>         at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:730)
>         at org.apache.hadoop.mapred.MapTask.run(MapTask.java:332)
>         at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:147)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at javax.security.auth.Subject.doAs(Subject.java:396)
>         at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1177)
>         at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:142)
> {code}

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